The old coil did not, so had the over about 10-year-old Schellenberg Aufschraubwickler be exchanged. The dimensions were still identical, so that a return for the new model without holes and therefore had no difficulties after such a long time. A detailed manual is included. Emergency can help the network and search for videos. The belt was mount without complications. The Aufschraubwickler is now almost a year in constant use and works like the beginning! Recommended for the hobby handyman and -Heimwerkerin.